Amateur radio (ham radio) was the topic of this week’s lesson. Ham radio is noncommercial radio communication. Radio waves are used to communicate between two people. The use of ham radios for training is sometimes needed to learn how to use a radio or electronics. Experiments can also be conducted using the radios. They can also be used as recreational instruments.
Among the communication methods available are voice, text, and image. There is no limit to what you can communicate within the city or to outer space using ham radio. It is good to have a communication system whose operation does not depend on electricity if your grid fails.
Whenever you speak into a radio, the audio waves that come from your mouth are converted into electric current. The carrier wave then becomes modulated. This modulated carrier wave can then be amplified depending on the reserve. As a result of the antenna signal, electrons oscillate back and forth, which produces magnetic and electric fields. When the frequency reaches a certain level, radio waves will be emitted. Once the receiving antenna catches the radio waves, then this signal will be demodulated. Basically, the AC current will be converted to a direct current, allowing us to hear the original audio.
This week I learned about soldering. According to the American Heritage dictionary the definition of soldering is a , “fusible alloy used for joining or binding together metal surfaces or joints, as the edges of tin cans, jewelry, and kitchen utensils.”
The more wattage you have the more heat that is produced to unite the two pieces together. The Screwdriver, spade, and conical tips are some of the more common tip shapes. The key is to get as much surface area contact between the tip and the work as possible. The Chisel and spade tips have larger surface areas at their ends then a conical tip.When it comes to preserving tip life, the number one thing you can do is lower the tip temperature, if your iron allows you to do so. After that, keep a layer of solder on the tip to prevent it from oxidizing, and clean it between uses. Oxides and charcoal flux majorly reduce the tips ability to heat the connection which is why it is very important to clean the tip. If you don’t clean the tip the oxides will become harder with time and heat and won’t work as well.
The transistor is one of the most important things that has ever been invented.
There are three terminals: The Source, the gate and the drain. According to Convention the flow of energy goes from the positive charge to the negative charge. It actually goes from the negative charge to the positive charge
Electronic component control electrons in specific ways. Electronic components have two or more leads or terminals. Terminals Connect into a printed circuit board or a (PCB). The placement of the components is determined by the purpose of the circuit. Atoms are basically building blocks of matter. Adams ( atomos) means invisible. Atoms are made of subatomic particles.
voltage means electrical pressure ( volts)
curtain means amount of electricity (amps)
resistance means resist current flow (ohms
George Simon Ohm
George Simon Ohm is the originator of Ohm’s law. He was a German physicist and a mathematician. He also introduced Ohm’s law in 1827.
This week I learned about communication, radios and how they each work. The smoke signal is a way that people used to communicate long ago. They would make fire and cover and uncover the smoke in patterns to communicate. Then, there was the pony express which was used from 1860-1861 it only lasted about 18 months. They would ride horses from St. Joseph, Missouri to Sacramento, California. They would stop every 10 miles at swing stations to change out their tired horse for a fresh one since they carried 20 lbs of mail and 20 lbs of protection they must weigh under 125 pounds because all of that weight is the limit that horses can carry. Electromagnetic radiation is energy charged and uncharged fields. Radio propagation is alternating the power of a current. A radio is a device that can control electrons. Two types of radios are catching radios which only catch radio waves. The other kind of radio is a 2 way radio which catches radio waves but also can give radio waves.
This week I learned about landscape design. A few principles in designing your landscape are balance, rhythm, and emphasis. Emphasis adds force and intensity. To stop repetition and make your landscape interesting add at regular intervals.balance can make your landscape formal or informal you can have a symmetrical or an asymmetrical. If you have a very large yard with tiny, sparely placed plants, then the yard may be out of proportion. Same as if you have a small yard full of massive plants and trees that are overgrown, then the yard may be out of proportion.
This week we talked about landscape architecture. There are 3 principles of great architecture, durability, utility and aesthetic quality. Before 1850 most of the landscape was palaces, monasteries and government buildings. Then in 1850-1950 most landscape projects were cemeteries, parks, and suburbs. And from 1950-now most landscapes are malls, office buildings and suburbs. Landscape developers improve the outdoors by adding curbs and protecting the soil. Land development is like parks, retail centers and resorts.
This week I learned about what is architecture. The word architect means chief builder. Architecture is the art and science of planning and building buildings. Landscape architecture is building outside environments. Planning, designing and building takes a lot of hard work. You are considered a architect if you build a building, a park, or even just a treehouse